Routes through the ice
Three Arctic corridors, each with its own regulatory framework, seasonal window and set of navigational constraints. What follows is reference material for anyone weighing a high-latitude routing — not a claim to have sailed all of them.
Northern Sea Route
The NSR runs along Russia's Arctic coastline from Novaya Zemlya in the west to the Bering Strait in the east. Summer transits (July–November) offer open-water passages; winter operations require nuclear icebreaker escort coordination with Rosatom FSUE Atomflot. It is the corridor with the most commercial traffic and the most developed escort infrastructure, and the one where seasonal timing does most to determine whether a passage is viable.
Northwest Passage
Running through the Canadian Arctic Archipelago, the NWP offers an alternative trans-Arctic route connecting the Atlantic and Pacific. The route has multiple variants through different straits; the southern route through Prince of Wales Strait is most navigable. Heavily regulated by Transport Canada and subject to AWPPA requirements. Ice conditions remain challenging and season length highly variable.
Transpolar Sea Route
The TSR crosses the central Arctic Ocean — the shortest possible route between Atlantic and Pacific. Currently only navigable in high summer for ice-class vessels, this route is emerging as a viable option as sea ice extent reduces. No territorial waters are crossed, eliminating permit complexity, but distance from emergency support infrastructure demands exceptional voyage preparation and vessel capability assessment.